New Balance Named after the T shape of the body and sleeves. It is normally associated with short sleeves, a round neck line known as a crew neck, with no collar. T-shirts are generally made of a light,fabric, and are easy to clean. Typically made of cotton textile in a jersey knit, it has a distinctively pliable texture compared to shirts made of woven cloth. The T-shirt transitioned from undergarment to general-use casual clothing. A V-neck T-shirt has a V-shaped neckline, as opposed to the round neckline of the more common crew neck shirt (also called a U-neck).